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Think Sheet

Last updated over 5 years ago

5 questions

1

1

1

1

1

Question 1

1.

What is the name of the metal which exists in liquid state at room temperature?

sodium

potassium

mercury

bromine

Question 2

2.

When the liquid is spun rapidly, the denser particles are forced to the bottom and the lighter particles stay at the top. This principle is used in:

Centrifugation

Fractional distillation

Evaporation

Tunneling

Question 3

3.

Which of the following elements is not a metalloid?

Silicon

Boron

Germanium

Tungsten

Question 4

4.

If we put camphor in an open container, its amount keeps on decreasing due to the phenomenon of

Evaporation

Precipitation

Condensation

Sublimation

Question 5

5.

The continuous zig-zag movement of colloidal particles in a dispersion medium is called

Dispersion

Tyndall effect

Brownian movement

Oscillation